September Weather in Ione, United States

Last updated: June 24, 2025

In September, the average temperature in Ione, United States hovers around 22°C (72°F). However, be prepared for a range, with minimum temperatures dipping to 7°C (46°F) and maximums soaring up to 42°C (107°F). Rainfall is relatively sparse, with just 5 mm (0.2 in) expected over 1 day, and the average humidity is a comfortable 44%.

September Temperature in Ione

In September in Ione, the average temperature is 22°C (72°F). The maximum can reach 42°C (107°F), while the minimum can drop as low as 7°C (46°F). It's important to pack for a wide range of temperatures to ensure comfort during your travels.

September Weather in Ione: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ione, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ione, September typically has an average temperature of 22°C (72°F), with highs reaching up to 42°C (107°F) and lows dropping to around 7°C (46°F).

Data source: Temperature data for Ione generated using information from the Copernicus Climate Change Service.

September Precipitation in Ione

In Ione in September, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

September Precipitation Trends in Ione

The chart displays monthly precipitation patterns in Ione, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ione, September typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Ione

In Ione in September, humidity is 44%. With an average temperature of 22°C (72°F), this humidity feels like a comfortable embrace, making it perfect for outdoor adventures and sightseeing without feeling too sticky or oppressive.

September Average Humidity in Ione

This chart illustrates the average monthly humidity levels in Ione, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ione is approximately 44%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ione

In Ione in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Ione.

Maximum UV Index Levels in Ione for September

The chart shows the monthly maximum UV Index (UVI) for Ione in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Ione typically reaches 9, which falls under the very high exposure category.

Data source: Ione September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Ione Compares to Other Months

Weather in Ione varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ione, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ione, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	140 mm (5.5 inches)	84%	moderate
February Weather	10°C (51°F)	127 mm (5.0 inches)	84%	moderate
March Weather	12°C (55°F)	138 mm (5.4 inches)	83%	high
April Weather	16°C (61°F)	65 mm (2.6 inches)	81%	very high
May Weather	19°C (66°F)	33 mm (1.3 inches)	74%	very high
June Weather	23°C (74°F)	3 mm (0.1 inches)	64%	extreme
July Weather	25°C (77°F)	0 mm (0.0 inches)	44%	extreme
August Weather	24°C (76°F)	0 mm (0.0 inches)	36%	very high
September Weather	22°C (72°F)	5 mm (0.2 inches)	44%	very high
October Weather	18°C (64°F)	37 mm (1.5 inches)	65%	high
November Weather	12°C (54°F)	69 mm (2.7 inches)	84%	moderate
December Weather	9°C (48°F)	120 mm (4.7 inches)	83%	moderate